Animation Assessment Question 4 of 4 Glucose transport out of intestinal cells i

Question

Animation Assessment Question 4 of 4 Glucose transport out of intestinal cells into the bloodstream requires which of the following? Select all that apply. The general chemical nature of a hormone can be used to predict: a Na+ concentration gradient between the blood and the intestinal cell D) a Na+-glucose cotransporter in the membrane facing the blood a glucose channel protein on the cell surface facing the blood a higher concentration of glucose in the intestinal cells ? a Na+ channel connecting the intestinal cell to the blood stream Submit

Explanation / Answer

Answer:

Glucose is essential for energy production in the living body. Glucose transport out of intestinal cells into the blood stream requires Na+ ions. By two mechanisms glucose is transported into the blood stream, they are facilitated diffusion and secondary active transport.

Through the facilitated diffusion is carried out by transporter protein molecules. Facilitated diffusion can occur between the blood stream and cells as the concentration gradient between the extra cellular and intracellular environments is such that no ATP hydrolysis is required.

A Na+ glucose cotransporter in the membrane facing the blood is used for the transport of intestinal cells into the blood stream.

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